14 Chapter 5 Input Characteristic
EC20 Series PLC User Manual
PG COM X0 X2 X4 X6 X10 X12 X14 X16 X20
LX1X3X5X7 X21X11 X13 X15 X17
+24V
N
X24
X23 X33 X37
X22
COM
X25 X27 X31
X26 X30 X32 X34 X36
X35
Wiring of EC20-3232BR and EC20-3232BT
Y0
COM
2
Y5 Y7 Y11 Y13 Y15 Y17 Y21
Y6 Y12 Y22Y14 Y16 Y20
COM
3
Y25
Y24 Y34
Y23
Y3
Y26 Y30 Y32
Y27 Y31 Y33 Y35 Y37
Y36
Y1
COM
0
COM
1
Y2 Y4 Y10
COM
4
COM
5
Figure 5-2 Outline and port layout of EC20-3232BR and EC20-3232BT
Table 5-2 Pin definition
Pin Function Note
L/N 220Vac AC power input port, L is live line, N is neutral line
PG Earth port
●
Null port, used for isolation and not wiring
X0~X37 User input signal ports, used together with COM can produce input signal
COM
Common port, it is the negative pole of the +24Vdc auxiliary power and the
common port of input as well. Two COMs connect inside the PLC.
+24V The auxiliary power to user external equipment , used together with COM.
Y0, COM0 Control output port, group 0
Y1, COM1 Control output port, group 1
Y2~Y7, COM2 Control output port, group 2
Y10~Y17, COM3 Control output port, group 3
Y20~Y27, COM4 Control output port, group 4
Y30~Y37, COM5 Control output port, group 5
The COMx
(COM0~COM4) of
each output group are
electrical isolated one
aother.
5.2 Input Port Characteristic And Signal Specification
Table 5-3 Input port characteristic and signal specification
Item High-speed input port X0~X7 General input port
Signal input mode Leak mode, users only need to connect dry contact with Xn and COM ports.
Test voltage 24Vdc
Input impedance 3.3k 4.3k
Input ON External circuit resistance < 400Ω
Electric
parameters
Electric
parameters
Input OFF External circuit resistance > 24kΩ
Digital filter X0~X17 have digital filtering function, the filtering time can be set within 0~60ms Filtering
function
Hardware filter Except for X0~X17, other I/O ports are hardware filtering, filtering time is about 8mS.
High-speed function
X0~X7 have high-speed counting, interrupt, and pulse catching function.
The highest counting frequency of X0 and X1 port is high up to 50KHz
The highest counting frequency of X2~X5 port is high up to 10KHz
Input Only has one common port: COM
Common port
Output Have multi isolated common ports according to different point configuration.
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